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Carnallite
Carnallite

Grossular
Grossular



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Carnallite
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Grossular

Carnallite and Grossular Optical Properties

Optical Properties

Luster

Greasy
Greasy, Vitreous

Pleochroism

-
None

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.4671.730-1.760
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
cubic

Birefringence

0.02700.020
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Carnallite and Grossular Optic Character

Carnallite and Grossular optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Carnallite and Grossular Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Carnallite and Grossular optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Carnallite and Grossular Transparency

Similar to their colors, Carnallite and Grossular transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Carnallite is while Carnallite is in appearance.